package com.xwb.config;

import com.xwb.filter.JwtAuthenticationTokenFilter;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
import org.springframework.security.authentication.AuthenticationManager;
import org.springframework.security.config.annotation.method.configuration.EnableGlobalMethodSecurity;
import org.springframework.security.config.annotation.web.builders.HttpSecurity;
import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;
import org.springframework.security.config.http.SessionCreationPolicy;
import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
import org.springframework.security.crypto.password.PasswordEncoder;
import org.springframework.security.web.AuthenticationEntryPoint;
import org.springframework.security.web.access.AccessDeniedHandler;
import org.springframework.security.web.authentication.UsernamePasswordAuthenticationFilter;

/**
 * @Author 三更  B站： https://space.bilibili.com/663528522
 */
@Configuration
@EnableGlobalMethodSecurity(prePostEnabled = true)
@ComponentScan(basePackages = "com.xwb")
public class SecurityConfig extends WebSecurityConfigurerAdapter {


    @Bean
    public PasswordEncoder passwordEncoder() {
        return new BCryptPasswordEncoder();
    }

    @Autowired
    JwtAuthenticationTokenFilter jwtAuthenticationTokenFilter;

    @Autowired
    private AuthenticationEntryPoint authenticationEntryPoint;

    @Autowired
    private AccessDeniedHandler accessDeniedHandler;


    @Bean
    @Override
    public AuthenticationManager authenticationManagerBean() throws Exception {
        return super.authenticationManagerBean();
    }

    @Override
    protected void configure(HttpSecurity http) throws Exception {
//        http
//                //关闭csrf
//                .csrf().disable()
//                //不通过Session获取SecurityContext
//                .sessionManagement().sessionCreationPolicy(SessionCreationPolicy.STATELESS)
//                .and()
//                .authorizeRequests()
//                // 对于登录接口 允许匿名访问
//                .antMatchers("/user/login").anonymous()
//                // 除上面外的所有请求全部需要鉴权认证
//                .anyRequest().authenticated();

        http
                .csrf().disable()
                .sessionManagement().sessionCreationPolicy(SessionCreationPolicy.STATELESS)
                .and()
                .authorizeRequests()
                .antMatchers("/user/login").anonymous()//.anonymous()匿名访问：未登录状态(不携带token)也可以访问
                .antMatchers("/user/register").anonymous()
                .antMatchers("/hello").permitAll()
                .anyRequest().authenticated(); //任意用户认证后都可以访问


        //把token校验过滤器添加到过滤器链中
        http.addFilterBefore(jwtAuthenticationTokenFilter, UsernamePasswordAuthenticationFilter.class);

        //配置异常处理器
        http.exceptionHandling()
                //认证失败处理器
                .authenticationEntryPoint(authenticationEntryPoint)
                .accessDeniedHandler(accessDeniedHandler);

        //允许跨域
        http.cors();
    }
}